Stirring device
Patent 4083653 Issued on April 11, 1978. Estimated Expiration Date: 
April 11, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 11, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 579668 609270 1218623 1728768 1734120 2896926 3030083 3455540 3559962 InventorApplicationNo. 768340 filed on 02/14/1977US Classes:416/142, WORKING MEMBER FOLDABLE, PIVOTABLE OR COLLAPSIBLE TO NON-USE POSITION366/308, Collapsible articulated stirrer366/328.1, Notched element366/328.3, Noncircular aperture366/330.1, Axially directing blade (e.g., propeller, helix section, etc.)416/231AMixers or agitatorsExaminersPrimary: Powell, Everette A. Jr.Attorney, Agent or FirmInternational ClassB01F 007/18AbstractA stirring device employs a shaft-mounted hub with five axially nested, radially extendable fins shaped to not only provide compact nesting of five fins to enter a bung opening of a drum, but also to provide ample surface area when extended for stirring. | |
